On 04/03/12 9:40 AM, Tom Lane wrote:
Alex Matzinger<amatzin...@experts-exchange.com>  writes:
>  The connection that is executing the SELECT 1 are generally open for 1-5
>  hours before they are killed.  The specific connection only executes
>  SELECT 1.  The transaction is simply BEGIN, and then SELECT 1's, no
>  other query is executed.
Lose the "BEGIN" and it will probably work more nicely.


indeed,a 1-5 hour long transaction means VACUUM can't clean up anything newer than the oldest active transaction, and thats not per database, thats cluster-wide.



--
john r pierce                            N 37, W 122
santa cruz ca                         mid-left coast


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